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# CreateHookKeyframesInterpolated - ComfyUI Built-in Node Documentation

> Complete documentation for the CreateHookKeyframesInterpolated node in ComfyUI. Learn its inputs, outputs, parameters and usage.

> This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! [Edit on GitHub](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/CreateHookKeyframesInterpolated/en.md)

Creates a sequence of hook keyframes with interpolated strength values between a start and end point. The node generates multiple keyframes that smoothly transition the strength parameter across a specified percentage range of the generation process, using various interpolation methods to control the transition curve.

## Inputs

| Parameter         | Data Type       | Required | Range                      | Description                                                                    |
| ----------------- | --------------- | -------- | -------------------------- | ------------------------------------------------------------------------------ |
| `strength_start`  | FLOAT           | Yes      | 0.0 - 10.0                 | The starting strength value for the interpolation sequence (default: 1.0)      |
| `strength_end`    | FLOAT           | Yes      | 0.0 - 10.0                 | The ending strength value for the interpolation sequence (default: 1.0)        |
| `interpolation`   | COMBO           | Yes      | Multiple options available | The interpolation method used to transition between strength values            |
| `start_percent`   | FLOAT           | Yes      | 0.0 - 1.0                  | The starting percentage position in the generation process (default: 0.0)      |
| `end_percent`     | FLOAT           | Yes      | 0.0 - 1.0                  | The ending percentage position in the generation process (default: 1.0)        |
| `keyframes_count` | INT             | Yes      | 2 - 100                    | The number of keyframes to generate in the interpolation sequence (default: 5) |
| `print_keyframes` | BOOLEAN         | Yes      | True/False                 | Whether to print generated keyframe information to the log (default: False)    |
| `prev_hook_kf`    | HOOK\_KEYFRAMES | No       | -                          | Optional previous hook keyframes group to append to                            |

## Outputs

| Output Name | Data Type       | Description                                                             |
| ----------- | --------------- | ----------------------------------------------------------------------- |
| `HOOK_KF`   | HOOK\_KEYFRAMES | The generated hook keyframes group containing the interpolated sequence |